[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1122)

[zacslost]

Starts to parse posts, downloads first HTML file and then:

Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 1342, in do_open h.request(req.get_method(), req.selector, req.data, headers, File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 1255, in request self._send_request(method, url, body, headers, encode_chunked) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 1301, in _send_request self.endheaders(body, encode_chunked=encode_chunked) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 1250, in endheaders self._send_output(message_body, encode_chunked=encode_chunked) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 1010, in _send_output self.send(msg) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 950, in send self.connect() File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/http/client.py", line 1424, in connect self.sock = self._context.wrap_socket(self.sock, File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ssl.py", line 500, in wrap_socket return self.sslsocket_class._create( File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ssl.py", line 1040, in _create self.do_handshake() File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ssl.py", line 1309, in do_handshake self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1122)

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 197, in _run_module_as_main return _run_code(code, main_globals, None, File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/runpy.py", line 87, in _run_code exec(code, run_globals) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/medium_to_ghost/medium_to_ghost.py", line 111, in main() File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/click/core.py", line 829, in call return self.main(*args, **kwargs) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/click/core.py", line 782, in main rv = self.invoke(ctx) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/click/core.py", line 1066, in invoke return ctx.invoke(self.callback, **ctx.params) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/click/core.py", line 610, in invoke return callback(*args, **kwargs) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/medium_to_ghost/medium_to_ghost.py", line 98, in main exported_posts = parse_posts(posts) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/medium_to_ghost/medium_to_ghost.py", line 53, in parse_posts converted_post = convert_medium_post_to_ghost_json(name, content) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/medium_to_ghost/medium_post_parser.py", line 90, in convert_medium_post_to_ghost_json new_image_path = download_image_with_local_cache(url, cache_folder) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/medium_to_ghost/image_downloader.py", line 34, in download_image_with_local_cache local_filename, headers = urllib.request.urlretrieve(url, local_destination) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 239, in urlretrieve with contextlib.closing(urlopen(url, data)) as fp: File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 214, in urlopen return opener.open(url, data, timeout) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 517, in open response = self._open(req, data) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 534, in _open result = self._call_chain(self.handle_open, protocol, protocol + File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 494, in _call_chain result = func(*args) File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 1385, in https_open return self.do_open(http.client.HTTPSConnection, req, File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 1345, in do_open raise URLError(err) urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1122)>

[ageitgey]

Basically, you don't have any SSL certificates installed for Python. When you install Python on macOS from python.org, there's a separate "Install Certificates.command" icon in the installer folder that you have to manually run to fix this. Just run it and it should be fixed.

See: https://stackoverflow.com/questions/52805115/certificate-verify-failed-unable-to-get-local-issuer-certificate/58525755#58525755